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Finding the Fourth Proportional to 159,681.60, 220,357.62 and 88,068.42

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Solution

The fourth proportional to 159,681.60, 220,357.62 and 88,068.42 is: 121,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,681.60 : 220,357.62 = 88,068.42 : x
  2. Step 2: Convert to fraction form
    159,681.60/220,357.62 = 88,068.42/x
  3. Step 3: Cross multiply
    159,681.60x = 220,357.62 × 88,068.42
  4. Step 4: Simplify right side
    159,681.60x = 19,406,547,428.36
  5. Step 5: Solve for x
    x = 19,406,547,428.36/159,681.60
  6. Step 6: Final answer
    x = 121,532.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.